Systeme Lauer LCA 180 Text Monitor LD 180.004.1

Product Overview

The Systeme Lauer LCA 180 Text Monitor, model LD 180.004.1 (reference 290388), is a dedicated alphanumeric operator terminal designed for industrial environments requiring simple, reliable text‑based human‑machine interaction. It provides a clear, high‑contrast LCD screen and a tactile keypad for data entry and system navigation, making it ideal for parameter setting, status monitoring, and diagnostic readout in machine control systems.

Display and User Interface

The unit features a 4‑line by 20‑character alphanumeric LCD with a backlight (adjustable intensity) and a contrast control potentiometer accessible from the front panel. The display supports ASCII characters, as well as international character sets (Latin‑1, Cyrillic, Greek) via downloadable fonts. The membrane keypad comprises 16 tactile keys: 10 numeric keys (0‑9), 4 cursor/arrow keys, and 2 function keys (Enter and Escape). The keys are rated for over 1 million actuations and are sealed against dust and light splashes (IP65 front rating).

Communication and Connectivity

The LCA 180 is equipped with a serial interface that can be configured as either RS‑232 (point‑to‑point) or RS‑485 (multi‑drop, up to 31 devices). The baud rate is selectable from 1200 to 115200 bps, with parity (none, even, odd) and data format (7 or 8 bits) user‑defined. A second port (9‑pin D‑sub) is available for programming or daisy‑chaining. The unit supports the LAUER proprietary protocol as well as Modbus RTU (master or slave) and a generic ASCII protocol for integration with third‑party controllers.

Memory and User Configuration

Onboard non‑volatile memory (EEPROM, 256 KB) stores up to 128 user‑defined screens, each containing static text, dynamic variables (numeric or boolean), and programmable function keys. Variables can be linked to internal registers or external PLC addresses via the communication protocol. The device also has a real‑time clock (battery‑backed) for time‑stamping events and alarm logging. Up to 50 alarm messages can be configured with priority levels and acknowledgment logic.

Electrical and Mechanical Specifications

• Power Supply: 24 V DC ±20 %, < 200 mA (without backlight load)

• Operating Temperature: 0 °C to 50 °C

• Storage Temperature: –20 °C to 70 °C

• Humidity: 10 – 90 % RH (non‑condensing)

• Housing: Impact‑resistant ABS/PC blend, front panel IP65, rear IP20

• Mounting: Panel‑mount with spring clips (cut‑out 138 mm x 68 mm)

• Dimensions: 160 mm x 96 mm x 45 mm (W x H x D)

• Weight: 0.4 kg

Programming and Configuration

The LCA 180 is configured using the LAUER LCA‑Config software (Windows‑based). The software allows the user to design screen layouts, assign variable addresses, define communication parameters, and download the project via the serial port. It includes a simulation mode to verify screen navigation and variable updates without connecting to the target hardware. The configuration file can be saved for backup or cloned to multiple units. For on‑the‑fly changes, the terminal supports a “setup mode” accessible by pressing a key combination at power‑up, enabling adjustment of baud rate, parity, and contrast without a PC.

Installation and Wiring

To install, cut the panel opening according to the supplied template, insert the monitor from the front, and secure it with the four spring clips – tighten the screws evenly to ensure a watertight seal. Connect the power supply (terminal block with screw clamps) using 0.75‑1.5 mm² wires, observing polarity. For RS‑485 wiring, use twisted‑pair cable with a common ground; terminate the bus with a 120 Ω resistor at the physical ends. Connect the programming cable (straight‑through serial) only when the unit is powered off. After wiring, apply power – the unit will display the startup screen and then enter the default operational mode.

Diagnostics and Maintenance

The LCA 180 performs a self‑test at power‑on, checking the display controller, memory, and communication ports. Any error is indicated by a flashing backlight and an error code on the screen. The unit stores an error log in EEPROM that can be retrieved via the configuration software. Routine maintenance includes cleaning the front overlay with a soft, damp cloth – do not use solvents. The backlight (LED type) has a typical lifetime of 50,000 hours and is not field‑replaceable; if the display becomes dim, the entire unit should be replaced. The battery (CR2032) for the RTC should be changed every 5 years; this requires opening the rear cover – only qualified personnel should perform this operation.

Compatibility and Ordering

This terminal is compatible with all LAUER LCA series controllers and with any PLC supporting Modbus RTU or a custom ASCII protocol. The part number LD 180.004.1 (290388) is the standard version with a 24 V DC supply and a green backlight. An optional red backlight and extended temperature range (‑20 °C to 60 °C) are available upon request. When ordering, specify the required communication protocol and any custom font sets to ensure factory pre‑configuration.